Edinburgh’s 20mph scheme cuts collisions and casualties analysis reveals – transportxtra
Speed data of 65 streets where the limit was reduced from 30mph to 20mph also showed a widespread drop in average speeds, said Edinburgh City Council.
The 20mph roll out was undertaken in four phases, starting in May 2016 and completing in early March 2018. Road Traffic Collision data was analysed for a 36-month period before the scheme was implemented, and for 36 months after.
Data for the 36 months after the scheme showed a 30% drop in collisions – a reduction of 1,015, from 3,384 to 2,369 – compared with the 36 months before. This resulted in a 31% fall in casualties – a reduction of 1,227 from 3,969 to 2,742. Comparing data for the 36 months ‘before’ and ‘after’ revealed a drop in collision severity levels, with four fewer fatalities, 22 fewer serious injuries, and 989 fewer slight injuries.
